Circuit Diagram Of Emitter Coupled Differential Amplifier. This circuit has both an inverting output out1 and a noninverting output out2. Collectors are connected to main supply vcc through collector resistor rc.

In electronics emitter coupled logic ecl is a high speed integrated circuit bipolar transistor logic family ecl uses an overdriven bjt differential amplifier with single ended input and limited emitter current to avoid the saturated fully on region of operation and its slow turn off behavior. Voltage gain equation of the common emitter amplifier. This circuit has both an inverting output out1 and a noninverting output out2.

The circuit shown below is a dual inputbalanced output differential amplifier here in this circuit the two input signals dual input v in1 and v in2 are applied to the bases b 1.

The circuit diagram of a differential amplifier using one opamp is shown below. Vcc and vee are the two supplies for differential amplifier. The circuits works proper even with a single supply voltage. Due to this r e1 appears in parallel with r e2 and the combination can be replaced by a single resistance denoted as r e.